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linux/io_uring
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Ming Lei 6f1cbf6d6f io_uring: fix buffer auto-commit for multishot uring_cmd 
Commit 620a50c927 ("io_uring: uring_cmd: add multishot support") added
multishot uring_cmd support with explicit buffer upfront commit via
io_uring_mshot_cmd_post_cqe(). However, the buffer selection path in
io_ring_buffer_select() was auto-committing buffers for non-pollable files,
which conflicts with uring_cmd's explicit upfront commit model.

This way consumes the whole selected buffer immediately, and causes
failure on the following buffer selection.

Fix this by checking uring_cmd to identify operations that handle buffer
commit explicitly, and skip auto-commit for these operations.

Cc: Caleb Sander Mateos <csander@purestorage.com>
Fixes: 620a50c927 ("io_uring: uring_cmd: add multishot support")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-10-23 19:41:31 -06:00
..
advise.c io_uring: finish IOU_OK -> IOU_COMPLETE transition 2025-05-21 08:41:16 -06:00
advise.h
alloc_cache.c io_uring: add alloc_cache.c 2025-01-28 15:10:40 -07:00
alloc_cache.h io_uring/net: convert to struct iou_vec 2025-03-07 13:41:08 -07:00
cancel.c io_uring: don't include filetable.h in io_uring.h 2025-09-08 13:20:46 -06:00
cancel.h io_uring/cancel: add generic cancel helper 2025-02-17 05:34:45 -07:00
cmd_net.c io_uring/uring_cmd: add support for IORING_SETUP_CQE_MIXED 2025-08-27 11:24:15 -06:00
epoll.c io_uring: finish IOU_OK -> IOU_COMPLETE transition 2025-05-21 08:41:16 -06:00
epoll.h io_uring/epoll: add support for IORING_OP_EPOLL_WAIT 2025-02-20 07:59:56 -07:00
eventfd.c io_uring/eventfd: open code io_eventfd_grab() 2025-04-24 08:33:54 -06:00
eventfd.h io_uring/eventfd: dedup signalling helpers 2025-04-24 08:33:54 -06:00
fdinfo.c io_uring/sqpoll: switch away from getrusage() for CPU accounting 2025-10-22 10:51:20 -06:00
fdinfo.h
filetable.c io_uring: correct __must_hold annotation in io_install_fixed_file 2025-10-23 07:25:07 -06:00
filetable.h io_uring/rsrc: pass 'struct io_ring_ctx' reference to rsrc helpers 2024-11-07 15:24:33 -07:00
fs.c io_uring: finish IOU_OK -> IOU_COMPLETE transition 2025-05-21 08:41:16 -06:00
fs.h
futex.c io_uring: add async data clear/free helpers 2025-08-27 11:24:25 -06:00
futex.h io_uring: move cancelations to be io_uring_task based 2024-11-06 13:55:38 -07:00
io-wq.c io_uring/io-wq: fix max_workers breakage and nr_workers underflow 2025-09-15 10:46:13 -06:00
io-wq.h io_uring/wq: avoid indirect do_work/free_work calls 2025-04-21 05:06:58 -06:00
io_uring.c io_uring: Fix code indentation error 2025-10-22 10:56:11 -06:00
io_uring.h for-6.18/io_uring-20250929 2025-10-02 09:56:23 -07:00
kbuf.c io_uring: fix buffer auto-commit for multishot uring_cmd 2025-10-23 19:41:31 -06:00
kbuf.h io-uring: move struct io_br_sel into io_uring_types.h 2025-08-24 11:41:12 -06:00
Kconfig io_uring: make zcrx depend on CONFIG_IO_URING 2025-03-31 07:07:44 -06:00
Makefile io_uring: introduce io_uring querying 2025-09-08 08:06:37 -06:00
memmap.c io_uring/memmap: cast nr_pages to size_t before shifting 2025-08-08 06:35:14 -06:00
memmap.h io_uring: update parameter name in io_pin_pages function declaration 2025-05-09 07:58:22 -06:00
mock_file.c io_uring/mock: add trivial poll handler 2025-07-02 08:10:26 -06:00
msg_ring.c io_uring/msg_ring: kill alloc_cache for io_kiocb allocations 2025-09-18 13:59:15 -06:00
msg_ring.h io_uring/msg_ring: Drop custom destructor 2024-12-27 10:08:21 -07:00
napi.c net: use napi_id_valid helper 2025-02-17 16:43:04 -08:00
napi.h io_uring/napi: add static napi tracking strategy 2024-11-06 13:55:38 -07:00
net.c io_uring: Fix code indentation error 2025-10-22 10:56:11 -06:00
net.h io_uring/net: convert to struct iou_vec 2025-03-07 13:41:08 -07:00
nop.c io_uring/nop: add support for IORING_SETUP_CQE_MIXED 2025-08-27 11:24:15 -06:00
nop.h
notif.c for-6.18/io_uring-20250929 2025-10-02 09:56:23 -07:00
notif.h
opdef.c io_uring: uring_cmd: add multishot support 2025-08-24 11:41:12 -06:00
opdef.h io_uring: add struct io_cold_def->sqe_copy() method 2025-06-23 08:59:13 -06:00
openclose.c io_uring: don't include filetable.h in io_uring.h 2025-09-08 13:20:46 -06:00
openclose.h io_uring: add support for IORING_OP_PIPE 2025-04-21 05:06:58 -06:00
poll.c for-6.18/io_uring-20250929 2025-10-02 09:56:23 -07:00
poll.h io_uring/poll: introduce io_arm_apoll() 2025-06-23 09:00:12 -06:00
query.c io_uring/query: cap number of queries 2025-09-19 07:06:43 -06:00
query.h io_uring: introduce io_uring querying 2025-09-08 08:06:37 -06:00
refs.h io_uring: always do atomic put from iowq 2025-04-03 08:31:57 -06:00
register.c io_uring: fix unexpected placement on same size resizing 2025-10-15 08:01:38 -06:00
register.h io_uring: temporarily disable registered waits 2024-11-15 09:58:34 -07:00
rsrc.c io_uring/rsrc: respect submitter_task in io_register_clone_buffers() 2025-09-08 13:21:24 -06:00
rsrc.h io_uring: export io_[un]account_mem 2025-07-16 16:23:28 -06:00
rw.c io_uring/rw: check for NULL io_br_sel when putting a buffer 2025-10-15 13:38:53 -06:00
rw.h io_uring/kbuf: pass bgid to io_buffer_select() 2025-04-21 05:06:58 -06:00
slist.h
splice.c io_uring: don't include filetable.h in io_uring.h 2025-09-08 13:20:46 -06:00
splice.h io_uring/splice: open code 2nd direct file assignment 2024-10-29 13:43:28 -06:00
sqpoll.c io_uring/sqpoll: be smarter on when to update the stime usage 2025-10-22 10:55:33 -06:00
sqpoll.h io_uring/sqpoll: switch away from getrusage() for CPU accounting 2025-10-22 10:51:20 -06:00
statx.c io_uring: finish IOU_OK -> IOU_COMPLETE transition 2025-05-21 08:41:16 -06:00
statx.h
sync.c io_uring: finish IOU_OK -> IOU_COMPLETE transition 2025-05-21 08:41:16 -06:00
sync.h
tctx.c io_uring/wq: avoid indirect do_work/free_work calls 2025-04-21 05:06:58 -06:00
tctx.h
timeout.c io_uring: include dying ring in task_work "should cancel" state 2025-09-18 10:24:50 -06:00
timeout.h io_uring/timeout: don't export link t-out disarm helper 2025-05-06 10:11:23 -06:00
truncate.c io_uring: finish IOU_OK -> IOU_COMPLETE transition 2025-05-21 08:41:16 -06:00
truncate.h
uring_cmd.c for-6.18/io_uring-20250929 2025-10-02 09:56:23 -07:00
uring_cmd.h io_uring/cmd: remove struct io_uring_cmd_data 2025-07-18 12:34:56 -06:00
waitid.c io_uring: fix incorrect unlikely() usage in io_waitid_prep() 2025-10-20 09:22:09 -06:00
waitid.h io_uring: move cancelations to be io_uring_task based 2024-11-06 13:55:38 -07:00
xattr.c io_uring: finish IOU_OK -> IOU_COMPLETE transition 2025-05-21 08:41:16 -06:00
xattr.h
zcrx.c io_uring/zcrx: increment fallback loop src offset 2025-10-08 07:26:14 -06:00
zcrx.h io_uring/zcrx: allow synchronous buffer return 2025-09-16 12:37:21 -06:00